Added the swift-crypto package to the dependencies in the Package.swift file, and also included it into the library target for non-apple environments.

Package.swift

@@ -33,6 +33,7 @@ let package = Package(
         .package(url: "https://github.com/apple/swift-openapi-generator.git", from: "1.3.0"),
         .package(url: "https://github.com/apple/swift-openapi-runtime", from: "1.5.0"),
         .package(url: "https://github.com/apple/swift-openapi-urlsession", from: "1.0.2"),
+        .package(url: "https://github.com/apple/swift-crypto.git", from: "3.13.0"),
         .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.1.0")
     ],
     targets: [
@@ -40,7 +41,10 @@ let package = Package(
             name: MarvelService.target,
             dependencies: [
                 .product(name: "OpenAPIRuntime", package: "swift-openapi-runtime"),
-                .product(name: "OpenAPIURLSession", package: "swift-openapi-urlsession")
+                .product(name: "OpenAPIURLSession", package: "swift-openapi-urlsession"),
+                .product(name: "Crypto", package: "swift-crypto", condition: .when(platforms: [
+                    .android, .linux, .openbsd, .windows
+                ]))
             ],
             path: "Sources/MarvelService",
             plugins: [
@@ -63,4 +67,4 @@ enum MarvelService {
     static let package = "marvel-service"
     static let target = "MarvelService"
     static let test = "\(MarvelService.target)Tests"
-}
+}